//
// Created by Мустафаев Селим Мустафаевич on 01.01.2024.
//

#include "DnsmasqSource.h"
#include <exception>
#include <sstream>
#include <iostream>

DnsmasqSource::DnsmasqSource() {
    _leases.open("/var/lib/misc/dnsmasq.leases");
    if(_leases.fail()) {
        throw std::runtime_error("failed to open leases file");
    }
}

std::vector<prometheus::Labels> DnsmasqSource::readLeases() {
    _leases.clear();
    _leases.seekg(0);

    std::string line, time, mac, ip, host, id;
    std::stringstream ss;
    std::vector<prometheus::Labels> result;

    while(std::getline(_leases, line)) {
        ss << line;
        ss >> time >> mac >> ip >> host >> id;
        result.push_back({
            {"time", time},
            {"mac", mac},
            {"ip", ip},
            {"host", host},
            {"id", id}
        });
    }

    return result;
}